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Retail experts say they expect a good U.S. House bill that might protect e-commerce will improve in the Senate. Last year, so-called patent trolls sued more than 2,400 technology-focused companies, including many in e-retailing, according to one company.

Retail experts say they expect a good U.S. House bill that might protect e-commerce will improve in the Senate. Last year, so-called patent trolls sued more than 2,400 technology-focused companies, including many in e-retailing, according to one company.